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ATE461553T1 - ESTIMATING THE WORKING POINT OF A NONLINEAR PROPAGATED WAVE STIR AMPLIFIER - Google Patents

ESTIMATING THE WORKING POINT OF A NONLINEAR PROPAGATED WAVE STIR AMPLIFIER

Info

Publication number
ATE461553T1
ATE461553T1 AT03777694T AT03777694T ATE461553T1 AT E461553 T1 ATE461553 T1 AT E461553T1 AT 03777694 T AT03777694 T AT 03777694T AT 03777694 T AT03777694 T AT 03777694T AT E461553 T1 ATE461553 T1 AT E461553T1
Authority
AT
Austria
Prior art keywords
twta
amplifier
operating point
nonlinear
estimating
Prior art date
Application number
AT03777694T
Other languages
German (de)
Inventor
Ernest Chen
Shamik Maitra
Original Assignee
Directv Group Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Directv Group Inc filed Critical Directv Group Inc
Priority claimed from PCT/US2003/033130 external-priority patent/WO2004040406A2/en
Application granted granted Critical
Publication of ATE461553T1 publication Critical patent/ATE461553T1/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
    • H01J25/34—Travelling-wave tubes; Tubes in which a travelling wave is simulated at spaced gaps
    • H01J25/49—Tubes using the parametric principle, e.g. for parametric amplification
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/54—Amplifiers using transit-time effect in tubes or semiconductor devices
    • H03F3/58—Amplifiers using transit-time effect in tubes or semiconductor devices using travelling-wave tubes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B1/0475—Circuits with means for limiting noise, interference or distortion

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Microwave Amplifiers (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Circuits Of Receivers In General (AREA)
  • Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

A method, apparatus, article of manufacture, and a memory structure provide the ability to determine an input operating point and an output operating point on a non-linear traveling wave tube amplifier (TWTA). The non-linearity of the TWTA is measured. An input roots mean-square (RMS) value of an input signal used to measure the non-linearity of the TWTA is computed. The RMS value identifies an input operating point of the measured non-linearity of the TWTA. Lastly, an output operating point is obtained.
AT03777694T 2002-10-25 2003-10-17 ESTIMATING THE WORKING POINT OF A NONLINEAR PROPAGATED WAVE STIR AMPLIFIER ATE461553T1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US42128902P 2002-10-25 2002-10-25
US51036803P 2003-10-10 2003-10-10
PCT/US2003/033130 WO2004040406A2 (en) 2001-04-27 2003-10-17 Estimating the operating point on a nonlinear traveling wave tube amplifier

Publications (1)

Publication Number Publication Date
ATE461553T1 true ATE461553T1 (en) 2010-04-15

Family

ID=34316139

Family Applications (1)

Application Number Title Priority Date Filing Date
AT03777694T ATE461553T1 (en) 2002-10-25 2003-10-17 ESTIMATING THE WORKING POINT OF A NONLINEAR PROPAGATED WAVE STIR AMPLIFIER

Country Status (9)

Country Link
US (1) US7230480B2 (en)
EP (1) EP1563601B1 (en)
AT (1) ATE461553T1 (en)
AU (1) AU2003286494A1 (en)
CA (1) CA2503532C (en)
DE (1) DE60331766D1 (en)
ES (1) ES2343005T3 (en)
NO (1) NO336363B1 (en)
TW (1) TWI310645B (en)

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US7778365B2 (en) 2001-04-27 2010-08-17 The Directv Group, Inc. Satellite TWTA on-line non-linearity measurement
US7173981B1 (en) * 2001-04-27 2007-02-06 The Directv Group, Inc. Dual layer signal processing in a layered modulation digital signal system
US7822154B2 (en) 2001-04-27 2010-10-26 The Directv Group, Inc. Signal, interference and noise power measurement
US8005035B2 (en) * 2001-04-27 2011-08-23 The Directv Group, Inc. Online output multiplexer filter measurement
US7583728B2 (en) * 2002-10-25 2009-09-01 The Directv Group, Inc. Equalizers for layered modulated and other signals
US7423987B2 (en) 2001-04-27 2008-09-09 The Directv Group, Inc. Feeder link configurations to support layered modulation for digital signals
US7471735B2 (en) * 2001-04-27 2008-12-30 The Directv Group, Inc. Maximizing power and spectral efficiencies for layered and conventional modulations
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US7529312B2 (en) * 2002-10-25 2009-05-05 The Directv Group, Inc. Layered modulation for terrestrial ATSC applications
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Also Published As

Publication number Publication date
CA2503532A1 (en) 2004-05-13
US7230480B2 (en) 2007-06-12
EP1563601A4 (en) 2006-05-17
AU2003286494A1 (en) 2004-05-25
US20060022747A1 (en) 2006-02-02
NO20052484D0 (en) 2005-05-24
DE60331766D1 (en) 2010-04-29
AU2003286494A8 (en) 2004-05-25
TWI310645B (en) 2009-06-01
TW200420058A (en) 2004-10-01
NO20052484L (en) 2005-07-12
EP1563601B1 (en) 2010-03-17
EP1563601A2 (en) 2005-08-17
CA2503532C (en) 2011-03-01
ES2343005T3 (en) 2010-07-21
NO336363B1 (en) 2015-08-10

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